Leg Study

AP Projection

1. Patient in supine;
2. Leg in extension ;
3. Dorsiflexion of the foot at 90º;
4. Medial rotation at 15º.

Central Ray perpendicular to the center of the leg.

Evaluation Criteria:

• Visualization of the ankle and the knee joints without rotation;
• Tibia and fibula moderately overlapped at the level of the proximal and the distal;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).

Lateral Projection

1. Patient in supine;
2. Turn toward the affected side with the leg until it is in lateral position;
3. Dorsiflexion of the foot at 90º;
4. Slight rotation such that the malleoli become superimposed.

Central ray perpendicular to the midpoint of the leg.

Evaluation Criteria:

• Visualization of the ankle and knee joints without rotation;
• Distal fibula lying over the posterior half of the tibia;
• Tibia and fibula moderately overlapped in the distal level;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).